Nissan Juke F15. Manual - part 486

VALVE TIMING OFFSET DATA WRITING

EC-757

< BASIC INSPECTION >

[MR EXCEPT FOR NISMO RS MODELS]

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VALVE TIMING OFFSET DATA WRITING

Description

INFOID:0000000012198267

Valve timing offset data writing is an operation to allow ECM to learn engine valve timing offset data. This oper-

ation must be performed after the following parts are replaced:

• ECM

• Engine assembly

Refer to 

EC-757, "Work Procedure"

.

Work Procedure

INFOID:0000000012198268

CAUTION:

• Perform the valve timing offset data clear operation beforehand. Refer to 

EC-756, "Description"

.

• If 2D code cannot be read, perform only the valve timing offset data clear operation.

1.

WRITE VALVE TIMING OFFSET DATA

 With CONSULT

1. Turn ignition switch ON.

2. Select “VALVE TIMING OFFSET DATA WRITING ” in “WORK SUPPORT” mode of “ENGINE” using CON-

SULT.

3. Observe the instructions displayed on the CONSULT screen to write 2D code affixed to the throttle valve.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition switch ON.

6. Check that DTC P100C is not displayed.

>> INSPECTION END

EC-758

< BASIC INSPECTION >

[MR EXCEPT FOR NISMO RS MODELS]

IDLE AIR VOLUME LEARNING

IDLE AIR VOLUME LEARNING

Description

INFOID:0000000012198269

Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps each engine idle speed

within the specific range. It must be performed under any of the following conditions:

• ECM is replaced.

• Engine assembly is replaced.

• Electric throttle control actuator is replaced or removed.

• Turbocharger assembly is replaced or removed.

• Idle speed or ignition timing is out of specification.

Refer to 

EC-758, "Work Procedure"

.

Work Procedure

INFOID:0000000012198270

1.

PRECONDITIONING

Make sure that all of the following conditions are satisfied.

Learning will be cancelled if any of the following conditions are missed for even a moment.

• Battery voltage: More than 12.5 V (At idle)

• Engine coolant temperature: 70 - 100

°C (158 - 212°F)

• Selector lever: P or N (CVT), Neutral (M/T)

• Electric load switch: OFF

(Air conditioner, headlamp, rear window defogger)

On vehicles equipped with daytime running light systems, set lighting switch to the 1st position to

light only small lamps.

• Steering wheel: Neutral (Straight-ahead position)

• Vehicle speed: Stopped

• Transmission: Warmed-up

- CVT models

• With CONSULT: Drive vehicle until “ATF TENP SEN” in “DATA MONITOR” mode of “CVT” system indicates

less than 0.9 V.

• Without CONSULT: Drive vehicle for 10 minutes.

- M/T models

• Drive vehicle for 10 minutes.
Do you have CONSULT?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

IDLE AIR VOLUME LEARNING

With CONSULT

1. Perform Accelerator Pedal Released Position Learning. Refer to 

EC-753, "Description"

.

2. Perform Throttle Valve Closed Position Learning. Refer to 

EC-754, "Description"

.

3. Start engine and warm it up to normal operating temperature.

4. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode of “ENGINE”.

5. Touch “START” and wait 20 seconds.
Is “CMPLT” displayed on CONSULT screen?

YES

>> GO TO 4.

NO

>> GO TO 5.

3.

IDLE AIR VOLUME LEARNING

Without CONSULT

NOTE:

• It is better to count the time accurately with a clock.

• It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has

a malfunction.

1. Perform Accelerator Pedal Released Position Learning. Refer to 

EC-753, "Description"

.

2. Perform Throttle Valve Closed Position Learning. Refer to 

EC-754, "Description"

.

3. Start engine and warm it up to normal operating temperature.

4. Turn ignition switch OFF and wait at least 10 seconds.

IDLE AIR VOLUME LEARNING

EC-759

< BASIC INSPECTION >

[MR EXCEPT FOR NISMO RS MODELS]

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5. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.

6. Repeat the following procedure quickly five times within 5 seconds.

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Fully depress the accelerator pedal.

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Fully release the accelerator pedal.

7. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops

blinking and turned ON.

8. Fully release the accelerator pedal within 3 seconds after the MIL turned ON.

9. Start engine and let it idle.

10. Wait 20 seconds.

>> GO TO 4

4.

CHECK IDLE SPEED AND IGNITION TIMING

Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifi-

cations. For specification, refer to 

EC-1258, "Idle Speed"

 and 

EC-1258, "Ignition Timing"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following

• Check that throttle valve is fully closed.

• Check PCV valve operation.

• Check that downstream of throttle valve is free from air leakage.
Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace malfunctioning part.

6.

DETECT MALFUNCTIONING PART

Engine component parts and their installation condition are questionable. Check and eliminate the cause of

the incident.

It is useful to perform “TROUBLE DIAGNOSIS - SPECIFICATION VALUE”. Refer to 

EC-785, "Description"

.

If any of the following conditions occur after the engine has started, eliminate the cause of the incident and

perform Idle Air Volume Learning all over again:

• Engine stalls.

• Erroneous idle.

>> INSPECTION END

SEC897C

EC-760

< BASIC INSPECTION >

[MR EXCEPT FOR NISMO RS MODELS]

AIR FUEL RATIO INITIAL LEARNING

AIR FUEL RATIO INITIAL LEARNING

Description

INFOID:0000000012198271

Air fuel ratio initial learning of ECM to learn the air fuel ratio that keeps each engine idle speed within the spe-

cific range. It must be performed under any of the following conditions:
• When ECM is replaced

*

• When engine assembly is replaced

*

• When electric throttle control actuator is replaced

*

• When mass air flow sensor is replaced

• When fuel injector is replaced

Refer to 

EC-760, "Work Procedure"

.

CAUTION:

*: Must be performed “IDLE AIR VOLUME LEARNING” when electric throttle control actuator or ECM is

replaced. Refer to 

EC-758, "Description"

.

Work Procedure

INFOID:0000000012198272

1.

PRECONDITIONING

Make sure that all of the following conditions are satisfied.

Learning will be cancelled if any of the following conditions are missed for even a moment.

• Battery temperature: More than 5

°C (41°F)

• Engine coolant temperature: More than 70

°C (158°F)

• Shift lever: P or N

• Electric load switch: OFF

(Air conditioner, headlamp, rear window defogger)

• Vehicle speed: Stopped

• Transmission: Warmed-up

• Drive vehicle for 10 minutes.
Do you have CONSULT?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

AIR FUEL RATIO INITIAL LEARNING

 With CONSULT

1. Perform “ACCELERATOR PEDAL RELEASED POSITION LEARNING”. Refer to 

EC-753, "Description"

.

2. Perform “THROTTLE VALVE CLOSED POSITION LEARNING”. Refer to 

EC-754, "Description"

.

3. Start engine and warm it up to normal operating temperature.

4. Select “A/F INITIAL LEARNING” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

5. Touch “START” and wait 20 seconds.
“CMPLT” displayed on CONSULT screen?

YES

>> INSPECTION END

NO

>> GO TO 4.

3.

AIR FUEL RATIO INITIAL LEARNING

 Without CONSULT

NOTE:

• It is better to count the time accurately with a clock.

• It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a mal-

function.

1. Perform “ACCELERATOR PEDAL RELEASED POSITION LEARNING”. Refer to 

EC-753, "Description"

.

2. Perform “THROTTLE VALVE CLOSED POSITION LEARNING”. Refer to 

EC-754, "Description"

.

3. Start engine and warm it up to normal operating temperature.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.

6. Repeat the following procedure quickly five times within 5 seconds.

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Fully depress the accelerator pedal.

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Fully release the accelerator pedal.